AutoFlower PPM Ranges

Resinhound

Resinhound

Well-Known Member
As a good average starting point for autos I start at ~250ppm in veg and ~500 ppm in flower.These starting points have worked well for me with my autos.Each strain is different of course and mediums,nutrients etc,but this has been a good starting point for me.
 
bubblenut

bubblenut

Well-Known Member
So my question....
When working in ppm do you still make up nutrient as according to brand instructions, then water it down if too high?
I have never used one and a mate is gifting me one soon.
 
Resinhound

Resinhound

Well-Known Member
Make sure you follow the manufacturer s correct RATIOS.So to answer your question yes you can just water it down.
 
bubblenut

bubblenut

Well-Known Member
Lol..... Im sure there is more to it than this but i like to learn so it will be fun.
I have never used one. I grow in soil and I just start my doses low and go up in small increments untill plants arent affected by manufacturers recommended full dosage. Simple really and have always had brilliant results.
 
5

5CUNDuP

Member
Taviddude said:
Every strain is different and the nutrient requirements can vary widely.
It will also vary with the brand of nutrients you use, or what kid of water you're using.

I grow large autoflowers, and I can NEVER push past 600 ppm in full bloom using General Hydroponics nutrients.
I give them nothing for a few days and then start them on 150ppm for about a week.
I usually push that to 400 for a week after that.
By day 30 I'm usually at 500 and won't push too much further past that until bloom.

Your schedule will be totally different.



To be safe without burning your plants.
Here's a pretty safe schedule. Although in hydro you should know how to read your plants and know what they need from movements in PPM, and PH.

1- 100
2- 200
3- 400
4- 450
5- 500
6- 525
7- 525
8- 525
9- 550
10-550
11-400
12-0

Also, if those plants will be sharing a reservoir you will want to run a bit lighter on nutrients in order not to burn weaker plants.
You just kind of have to play the middle ground with that many auto's.
If you're growing them all in separate bubble buckets..... Have Fun checking/adjusting water level, PPM, PH and res changes.

Peace.
Tav
Click to expand...
These numbers, are they what my solution should be in the can (pre-feed), or (post) what the runoff should be?
Peace, love and unity brother
DUN5
 
G

Grower202085

Active Member
Taviddude said:
Every strain is different and the nutrient requirements can vary widely.
It will also vary with the brand of nutrients you use, or what kid of water you're using.

I grow large autoflowers, and I can NEVER push past 600 ppm in full bloom using General Hydroponics nutrients.
I give them nothing for a few days and then start them on 150ppm for about a week.
I usually push that to 400 for a week after that.
By day 30 I'm usually at 500 and won't push too much further past that until bloom.

Your schedule will be totally different.



To be safe without burning your plants.
Here's a pretty safe schedule. Although in hydro you should know how to read your plants and know what they need from movements in PPM, and PH.

1- 100
2- 200
3- 400
4- 450
5- 500
6- 525
7- 525
8- 525
9- 550
10-550
11-400
12-0

Also, if those plants will be sharing a reservoir you will want to run a bit lighter on nutrients in order not to burn weaker plants.
You just kind of have to play the middle ground with that many auto's.
If you're growing them all in separate bubble buckets..... Have Fun checking/adjusting water level, PPM, PH and res changes.

Peace.
Tav
Click to expand...
So you still have the same problem with one res because if you underfeed to compensate for weak plants you will be underfeeding the strong yielding potential of the stronger plants.
 
Hairstoned84

Hairstoned84

Member
Im running 900ppm or 1.8 EC on my autos in hydro and in soil!!! They are beasts!! No burn at all!! Using GH trio with sensizym and botanicare cal mag!! They are beefin like crazy!! I have a 22 inch tall plant in 30 days!! Never had one grow so fast!!!
 

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IndooorGardnerOhio

Well-Known Member
whitnasty1 said:
Alright sounds good, so around 100ppm max will be sufficient for seedlings? What nutrients do you guys use on your autos? Just wondering. I am thinking of going with Fox Farm's line, along with Cha Ching Open Seasame and Beastie Bloom. Might pick up general organics Go Box for their CaMg+ and their Bio Root. Seem to be beneficial products. Thoughts?
Click to expand...
I will be using Megacrop once my baby is ready for her first meal in a few days, I divided what the bag said by 4, so she will get 1 gram in 1 gallon of water for her first few feeding depending on how much she grows.
 
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